Stereoscopic viewer



FIG. 1 is a perspective view of a stereoscopic viewer, showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a right side elevational view, the left side being a mirror image thereof;

FIG. 4 is a top plan view thereof.

FIG. 5 is a bottom plan view thereof; and

FIG. 6 is a rear elevational view thereof. 

The ornamental design for a stereoscopic viewer, as shown and described. 